Air-tight stove



J. G. ALLEN.

. Heating Stove. No. l48,144. Pmend June 13, 1865.

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JOSHUA G. ALLEN, OF PHILADELPHIA, PENNSYLVANIA.

Al R--TIGHT STOVE.

Specification forming part of Letters Patent No. 48,144, dated June 13, 1865.

y had to the accompanying drawings, in which- Figure lis a front elevation of the stove .oomplete. Fig. 2 is a vertical central section ot' the same. Fig. 3 is a front elevation of the sheet-iron portion of the stove; and Fig. 4, a horizontal section through the ash-pan.

The nature of my invention consists in surrounding the sheet-iron base of an air-tight stove with a cast-iron case for the purpose of giving it greater solidity and firmness, and increasingits capability of ornamentwithout detriment to its air-tight quality.

Air-tight stoves have heretofore been made either entirely ot' sheet-iron or with a body of that material and a base formed of cast-iron plates, which cannot be so united as to be perfectly air-tight. Stoves made in the last-mentioned method will permit the access of air to the fuel, and thus lose the economy resulting from the slow combustion which takes place in a stove made perfectly tight. The object of the cast-iron base in the stoves just alluded to was to attain greater stability by an increased weight, while securing, by the employment of the more tractable material, a larger susceptibility of ornamental design, neither of which qualities pertain in any great degree to sheet-iron when used alone for such a purpose. The larger mass of the cast-iron enables it, moreover, to retain and radiate the heat for a longer time than the sheet metal. The chief merit of the air-tight stove-its economy-was by this construction in a great measure sacriiiced to the attainment of a property which should have been regarded as secondary and accidental. A

The joints ot' sheet-iron can be made perfectly air-tight, and by making thebase of the stove of that material and surrounding it with an outer casing ot' cast-iron the advantages of both materials can be united without any sacritce of the valuable principle of air-tightconstruction. This is the aim and character of my invention.

In the drawings the same part is marked by the same letter of reference wherever it occurs.

A marks the body of the stove; B, the sheetiron chamber forming its base; G, the drafthole; D, its cap or cover; E, the grate; F Gr H I, the cast-iron case surrounding and inclosling the buse B. Jis the ornamental cast-iron top, which rests upon a tight sheet-iron top.

Having thus fully described my invention, I do not claim a cast-iron base to a sheet-iron stove, nor do .I claim a stove with an sheet-iron base; but

What I do claim, and Letters Patent, is

Inclosing the air-tight chamber forming the base ot' a sheet-iron stove in a case of cast-iron, substantially in the manner and for the purpose set forth.

The above specilication of my said invention signed and witnessed, at Philadelphia, this 8th day of April, A. D. 1865.

J. G. ALLEN.

desire to secure by Witnesses:

GHAs. F. STANsBUaY, B. FRANK PALMER.

airtight 4 

